四、板块建筑 铺筑板块处,先将道床混凝土浇筑至预定高度。在轨道中心线上,筑有高25cm、直径40cm的突出柱形体,中心间距为5m。此柱体作为板块安置的准绳,在调好板块位置后,四角再用固定螺栓固定。此时,板块与其道床的间隙约为5cm。然后,将水泥沥青砂浆注入并使其固化。一日后拆模,三日后,再将固定螺 Fourth, the plate building Paving slab, the first concrete pouring to a predetermined height. On the centerline of the track, a protruding column with a height of 25 cm and a diameter of 40 cm is built with a center distance of 5 m. This column as a yardpost of plate placement, adjust the position of the plate, the four corners and then fixed with bolts. At this point, the gap between the plate and its ballast bed is about 5cm. Then, cement asphalt mortar is injected and allowed to solidify. One day after the removal of mold, three days later, then fixed-screw